| Año | Valor |
|---|---|
| 1961-01-01 | 0.024995 |
| 1962-01-01 | 3.423216 |
| 1963-01-01 | 4.590046 |
| 1964-01-01 | 1.783842 |
| 1965-01-01 | 2.697642 |
| 1966-01-01 | 4.880109 |
| 1967-01-01 | 4.013277 |
| 1968-01-01 | 6.146364 |
| 1969-01-01 | 2.162937 |
| 1970-01-01 | 2.897657 |
| 1971-01-01 | 2.728298 |
| 1972-01-01 | 5.569386 |
| 1973-01-01 | 3.387110 |
| 1974-01-01 | 0.638404 |
| 1975-01-01 | 4.907603 |
| 1976-01-01 | 2.247090 |
| 1977-01-01 | 2.577384 |
| 1978-01-01 | -0.264150 |
| 1979-01-01 | -2.120223 |
| 1980-01-01 | -3.564803 |
Fuente: World Bank